Abstract
AbstractSixteen triethylbenzylammonium chlorometallates [Et3 NCH 2Ph][MCIn]m− (M= transition metal, m= 1–3, n= 3–6) and nine anchored ionic metal complexes [℗–CH2PBu3][MCIn]m− derived from ‘polymer‐bound tributylmethylphosphonium chloride’ have been prepared. All the complexes were studied as catalysts in the hydrosilylation of phenylacetylene with triethylsilane. The homogeneous RhIII, PtIV, IrIII, CuII, ZnII, FeIII and anchored PtIV, RhIII, OsIV complexes were found to be active in this reaction. The regio‐ and stereoselectivity of the following catalyst types is determined by the metal atom involved, being a weak function of the chemical environment; neutral chloride (MCln–m); acid (H2MCl6); salt containing the lipophilic organic cation ([Et3NCH2Ph][MCln]m−); polymer‐supported metallate anion ([℗–CH2PBu3] [MCln]m−).
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